R4F24568NVFQV Renesas Electronics America, R4F24568NVFQV Datasheet - Page 1019

• Manufacturer Part Number: R4F24568NVFQV
• Description: MCU 128KKB FLASH 48K 144-LQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2400r

Specifications of R4F24568NVFQV

• Core Processor: H8S/2600
• Core Size: 16/32-Bit
• Speed: 32MHz
• Connectivity: EBI/EMI, I²C, IrDA, SCI, SSU, UART/USART, USB
• Peripherals: DMA, POR, PWM, WDT
• Number Of I /o: 96
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 48K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 16x10b; D/A 2x8b
• Oscillator Type: External
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 144-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

H8S/2456, H8S/2456R, H8S/2454 Group
16.5.2
The above flowchart shows the operation in the case of in section 16.9, Example of USB External
Circuitry.
In applications that do not require USB cable connection to be detected, processing by the USB
bus connection interrupt is not necessary. Preparations should be made with the bus-reset
interrupt.
REJ09B0467-0350 Rev. 3.50
Jul 07, 2010
No
Cable Connection
Protocol processing block reset
USB bus connection interrupt
Wait for setup command
reception complete interrupt
Protocol processing block
reset release
USB cable connection
D+ pull-up enabled?
Cable disconnected
General output port
Bus reset reception
Bus reset interrupt
IFR0.VBUSF = 1
VBUS pin = 0 V
IFR0.BRST = 1
USB function
Yes
Figure 16.3 Cable Connection Operation
Interrupt request
Interrupt request
Firmware preparations for
start of USB communication
Wait for setup command
reception complete interrupt
As soon as preparations are
completed, enable D+ pull-up.
Clear bus reset flag.
Clear VBUSF flag.
USB module interrupt
setting
(IFR0.VBUSF)
(EP0 to EP3)
(IFR0.BRST)
Clear FIFOs.
Application
Section 16 USB Function Module (USB)
Initial
settings
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